Perhaps you should try some spelling variations:
nghien tach » nghiep sach, nghiem sach, nghiep thanh
nghiep cach » nghiep sach, nghiep cay, nghiep bac
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nghien tach) OR (nghiep cach)) - canh tranh cua thong cong manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((nghien tach) OR (nghiep cach)) - canh tranh cua thong cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((nghien tach) OR (nghiep cach)) - canh tranh cua thong cong manh toan ban*.